Hoist.



No. 697,276. Patented Apr. 8, |902. D.- E. RUWLAND.

HOIST.

(Application led Nov. 2l, 1901.) (No Model.)

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an STATES PATENT i Fries.

DAVID E. ROIVLAND, OF CANTON, OHIO.

HOIST.

SPECIFICATION forming* part f Letters Patent NO. 697,276, dated April 8, 1902. Application filed November 21, 1901. Serial No. 83,109. (No model.)

To @ZZ whom t may concern:

Be it known that I, DAVID E. ROWLAND, a citizen of the United States, residing at Oanton, in the county of Stark and State of Ohio,

have invented certain new and useful Improvements in Hoists; and I do hereby declare that the following is a full, clear, and exact description of the same, reference being had to the annexed drawings, making a 1o part of this specification, and to the numerals of reference marked thereon, in which- Figure lis a side elevation of the hoist, showing the same partly in section and illustrating an edge view of the pulleys. Fig. 2 is a vertical section of the frame, also showing a sectional view of the pulleys and the diierent parts pertaining to the same. Fig. 3 is a perspective view showing a portion of the frame and illustrating the release and 2o locking lever and the dierent devices pertaining thereto, showing the same enlarged. Fig. 4 is a detached view of the pulley-releasing device, showing the bottom or lower portion of the yoke.

The present invention has relation to hoists; and it consists in the diderent parts and combination of parts hereinafter described, and particularly pointed out in the claims.

Similar numerals of reference indicate corresponding parts in all the figures of the drawings.

In the accompanying drawings, l represents the frame, which is substantially of the form shown, but may be of any other form, if desired. To the frame l is connected the pulley-shaft 2, and upon which pulleyshaft are mounted the pulleys 3 and 4, said pulleys being located side by side, as illustrated in the drawings. The pulley 4 is some- 4o what smaller in diameter than the pulley 3,

moving the elevating-chain 5 over said pulleys in the direction to elevate the load an upward movement will be imparted to the load, thereby providing a means for easily elevating by hand heavy articles. When it is desired to impart a rapid upward movement, the pulleys 3 and 4 are disconnected, and the elevating-chain 5 moving over the single pulley 3 and the pulley 4 remaining at rest.

The frame 1 is suspended by means of the hook 6, which hook is connected to the head 7, said head being located in the chamber 8. To the head 7 is connected the swiveled head 9, which swiveled head is provided with the downward extending iianges 10, to which downward-extending flanges is pivotally connected the lever 11, which lever extends outward any desired distance, and to the outer end thereof is pivotally attached the swinging arm112, to which swinging arm is attached the operating cord or chain 13. To the swinging arm 12 is pivotally attached the`link 14, the inner end of which linkV is pivotally connected to the bottom or lower ends of the bars 15, said bars being pivotally attached to the downward-extending arm 16, formed upon the lever 1l. The lever 11 extends through the slot 17, formed in one side of the frame 1, said slot being formed ofsuch a length that a limited movement can be given to the lever upon its pivotal point, which4 pivotal point is located at its inner end and upon the frame l. The lever 11 is provided with the downward-extending yoke 18, which downward-extending yoke embraces the grooved collar 19, which grooved collar is slidably i mounted upon the hub 2O of the pulley 3. The grooved collar 19 is provided with the pins 2l, whichV pins are for the purpose of locking the pulleys 3 and 4 together when said pins are passed through the proper apertures 22, formed in the pulley 4.

It will be understood that when the outer end of the lever 11 is pulled down by means of the chain or cord 13 the bottom or lower end of the yoke 18 will be moved outward or away from the pulley 3, thereby disengaging the pins 21 from the pulley 4, at which time the pulley 3 is free to rotate independent of the pulley 4, and when in this condition the hoist is calculated to elevate light loads and to move the load rapidly, and for the purpose of holding the yoke 18, together with the pins 2l, so that said pins will be detached from the pulley 4, a sliding key 23 is provided and located upon the top or upper side of the lever 11. upward-extended lug or arm 24, which upward-extending arm or lug is provided with the slot 25, which slot is for the purpose of receiving the cross-pin 26, which cross-pin is connected to the top or upper ends of the bars 15, and in order to lock the lever down the bottom or lower end of the pivoted arm 12 is moved outward, as illustrated in full lines, Fig. 2, which outward movement throws the upper ends of the bars 15 toward theframe 1, carrying with them the key 23 and bringing said key into the slot 17 above the lever 11, thereby holding the lever down and the pulley 4 disengaged. For the purpose of preventing the key or wedge from becoming displaced when moved outward or out of engagement with the slot 17 said key is provided with the guide-point 27, which guide-point is so located that should the key at any time become detached from the slot said key will be held in proper position with reference to the slot 17.

It will be understood that when the lever 11 is pulled downward it will turn upon the rivet or bolt 28, and the inner end of the lever will move upward, carrying with it the frame 1, together with the dierent parts connected to said frame. It will be understood that the frame slides upward upon the head 9 when the lever 11 is pulled down, and after the key 23 has been inserted in the slot the lever is locked in a lowered position and the frame held in an elevated position. It will be understood that the upward movement of the frame is slight, inasmuch as the distance between the pivotal point of the lever to the swiveled head 9 and the pivotal point to the frame 1 is short, thereby giving a greater amount of leverage, so as to provide for easily operating the lever 11 regardless of the load carried.

When it is desired to have the pulleys 3 and 4 rotate in unison, and thereby provide a slow and powerful hoist, the pivoted arm 12 is moved toward the frame 1 at its bottom or 'lower end, which movement withdraws the key 23 from the slot 17, after which the lever is free to move upward a sufficient distance to allow the pins 2l to become engaged with the proper apertures 22, formed in the pulley 4, and when the lever has moved upward the weight of the frame 1, together with the load carried thereby, will hold the lever 11 in an elevated position, thereby securely connecting the pulleys 3 and 4 together.

In practice the head 7 and the swiveled head 9 should be formed in sections or halves, so that they may be properly located in the chamber 8, and when so located they will be held in the proper position with reference to each other. This construction not being The sliding key 23 is provided with the claimed in this application, no detail description is deemed necessary.

The pulley 4 is provided with the flange 29, which flange is provided upon its periphery with the teeth 30, said teeth being for the purpose hereinafter described.

The lever 11 is provided with the downwardextending arm 31, which downward-extending arm is for the purpose of engaging one of the teeth 30, and thereby locking the pulley 4 against rotation at a time when the lever 11 is pulled downward at its outward end to disengage the pulley 3 from the pulley 4. By this arrangement a positive lock is provided and the pulley 4 securely held against rotation. It will be understood that when the key 23 is brought into the slot 17 the arm 3l will be locked and held in a positive position.

Having fully described my invention, what I claim as new, and desire to secure by Letters Patent, is-

1. In a hoist of the class described, a frame provided with independent rotatable pulleys located side by side, an elevating-chain located over the pulleys, a swiveled head connected to a head, said head having connected thereto a suspending-hook, a lever pivoted to the swiveled head and to the frame,

said lever provided with a pivoted arm located at its outer end, a link pivoted to the arm, pivoted bars carriedv by the lever and a key actuated by the pivoted bars adapted to lock the lever in a lowered position, and means for connecting the pulleys, and disconnecting substantially as and for the purpose specified.

2. In a hoist of the class described, a frame provided with a shaft having pulleys mounted loosely thereon, an elevatingchain located over the pulleys, means for connecting and disconnecting the pulleys, a lever pivoted to the frame and to aswiveled head, akey or wedge located upon the lever and means for sliding-the key upon the lever, substantially as and for the purpose specified.

3. In a hoist of the class described the combination of a frame having pivoted thereto a lever, pulleys loosely mounted upon a shaft, a grooved collar provided with pins, apertures formed in one of the pulleys adapted to receive the pins of the sliding collar, a yoke to actuate the sliding collar, a swiveled head pivotally connected to the lever, and said lever provided with an arm located at its outer end, a sliding key located upon the lever, and meansfor operating the key by means of the swinging movement of the arm located at the outer end of the lever, substantially as and for the purpose specified.

4. In a hoist of the class described, a frame pulleys mounted upon a shaft, the shaft carried by the frame one of said pulleys provided with a toothed flange, alever provided with a downward-extending arm 16 and means for locking the lever in a lowered position and releasing the pulleys one from the other,

IIO

frame, an elevating-chain located over the pulleys, and means for disengaging the pulleys, substantially as and for the purpose specified. s

In testimony that I claim the above I have hereunto subscribed my name in the presence of two witnesses.

DAVID E. ROWLAND. Witnesses:

J. A. J EFFERs, F. W. BOND. 

